#region Copyright

// The contents of this file are subject to the Mozilla Public License
//  Version 1.1 (the "License"); you may not use this file except in compliance
//  with the License. You may obtain a copy of the License at
//  
//  http://www.mozilla.org/MPL/
//  
//  Software distributed under the License is distributed on an "AS IS"
//  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
//  License for the specific language governing rights and limitations under 
//  the License.
//  
//  The Initial Developer of the Original Code is Robert Smyth.
//  Portions created by Robert Smyth are Copyright (C) 2008.
//  
//  All Rights Reserved.

#endregion

using NoeticTools.StateEngine.Logging;
using NoeticTools.StateEngine.States;


namespace NoeticTools.StateEngine.Actions
{
    public class TransitionToStateAction<TContext, TState, TStateEvent> : IAction<TContext>
        where TContext : class
    {
        private readonly ICurrentState<TContext, TState, TStateEvent> currentState;
        private readonly ILogger logger;

        public TransitionToStateAction(TState toState,
                                       ICurrentState<TContext, TState, TStateEvent> currentState,
                                       IContextualLogManager logManager)
        {
            ToState = toState;
            this.currentState = currentState;
            logger = logManager.GetLogger();
        }

        public TState ToState { get; private set; }

        public void Execute()
        {
            logger.Debug("Changing to {0} state", ToState);
            currentState.ChangeTo(ToState);
        }

        public void Execute<T>(T arg)
        {
            logger.Debug("Changing to {0} state", ToState);
            currentState.ChangeTo<object>(ToState, arg);
        }
    }
}